JP2012046089A - Heat shielding structure for automobile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heat shielding structure for an automobile capable of surely preventing an inflow of air increased in temperature and capable of improving workability at the time of installation.SOLUTION: A heat shielding member 20 is placed in a space s1 between a cross member (automobile body member) 10 and an air conditioning condenser 7. The heat shielding member 20 includes a band of a base part 20a vertically extending in a heat shielding area of the space s1, and elastically deformable heat shields 20b, 20c formed so as to block up the space s1. A hook-shaped first engaging part 20d to engage with a lower edge portion 10d of the cross member 10, and a claw-shaped second engaging part 20e to engage with an upper edge portion 10c of the same in a state that the first engaging part 20d is engaged with the lower edge portion 10d are formed in the base part 20a.

Description

  The present invention relates to a heat shield structure for an automobile that prevents air that has passed through a radiator or air that has been heated by an engine from flowing into an air conditioning condenser.

  In automobiles, for example, when stopping or traveling at a low speed, there is a case where a heat shielding structure is used to prevent air that has passed through a radiator or air that has risen in temperature from flowing into the air conditioning condenser. For example, Patent Document 1 discloses a structure in which a shielding portion extending close to an air conditioning capacitor is integrally formed on a bumper net of a front bumper.

  On the other hand, in recent automobiles, there is a case where a cross member having a cross-sectional hat shape extending in the vehicle width direction is disposed between the front bumper and the air conditioning capacitor from the viewpoint of improving energy absorption performance at the time of a vehicle collision.

  When such a cross member is provided, the cross member cannot be used to form a shielding portion on the front bumper. For this reason, a resin foam material or the like which is easily elastically deformed is inserted between the cross member and the air conditioning capacitor, and is adhered to the cross member with an adhesive tape or the like.

JP 7-223500 A

  By the way, in the structure of the above-mentioned Patent Document 1 in which the shielding part is formed so as to protrude rearward from the front bumper, a gap is inevitably generated between the shielding part and the air conditioning capacitor, and the inflow of hot air cannot be reliably prevented. There's a problem.

  In addition, when the resin foam material is assembled from between the cross member and the air conditioning capacitor, the gap can be closed by elastic deformation of the foam material. In addition, there is a problem that variations tend to occur.

  The present invention has been made in view of the above-described conventional situation, and it is an object of the present invention to provide a heat shielding structure for an automobile that can reliably prevent inflow of air whose temperature has risen and can improve workability during assembly. .

  According to the present invention, an air conditioning capacitor is disposed behind the front bumper in the vehicle, and a radiator is disposed on the rear side of the air conditioning capacitor, and the air conditioning capacitor between the front bumper and the air conditioning capacitor is provided. A vehicle body heat-shielding structure in which a vehicle body member extending in the vehicle width direction is disposed in the vicinity of the vehicle body to prevent inflow of air whose temperature has risen from a gap between the vehicle body member and the air conditioning capacitor. A heat shielding member is disposed in a gap with the air conditioning capacitor, and the heat shielding member is formed so as to close the gap with a band plate-like base portion extending in a vertical direction in the heat shielding region of the gap. A heat-insulating material that can be elastically deformed, and a hook-shaped first engaging portion that engages with either the upper edge portion or the lower edge portion of the vehicle body member on the base portion, and the first Engagement part engaged In is characterized in that the formation of the second engagement portion of the pawl shaped to engage the other.

  According to the heat shield structure according to the present invention, the heat shield member has a base portion extending in the vertical direction in the heat shield region of the gap, and an elastically deformable heat shield material that closes the gap. The gap between the vehicle body member and the air conditioning capacitor can be closed by the heat shielding material, and the air whose temperature has risen can be prevented from flowing into the air conditioning capacitor.

  In the present invention, the base portion is engaged with either the upper edge portion or the lower edge portion of the vehicle body member, and the first engagement portion is engaged with the other while the first engagement portion is engaged. Since the second engaging portion to be joined is formed, the base portion is inserted into the gap between the vehicle body member and the air conditioning capacitor, and the first engaging portion of the base portion is engaged with one edge portion of the vehicle body member. In this state, the heat shielding member can be easily assembled by engaging the second engaging portion with the other edge portion, and the workability at the time of assembling compared to the case of pasting with a conventional adhesive tape or the like. Can be improved and variation can be prevented. As a result, if the gap can be inserted into the base portion, it can be reliably and easily assembled even in a narrow gap that has been difficult with conventional foam materials.

It is a schematic plan view of the front part of the motor vehicle in which the heat shielding member by Example 1 of this invention was arrange | positioned. It is a perspective view of the front bumper of the front part. FIG. 3 is a sectional view of the front bumper (a sectional view taken along line III-III in FIG. 2). It is sectional drawing (IV-IV sectional view taken on the line of FIG. 2) of the said front bumper. It is a perspective view of the said heat shielding member. It is a cross-sectional enlarged view of the 2nd engaging part of the said heat shielding member.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

  1 to 6 are views for explaining a heat shield structure for an automobile according to Embodiment 1 of the present invention. In the description of the present embodiment, the terms front / rear and left / right mean front / rear and left / right when viewed in the vehicle traveling direction while seated on a seat mounted on the vehicle, unless otherwise specified.

  In the figure, reference numeral 1 denotes a front portion constituting an engine room E of an automobile. The front portion 1 includes left and right side members 2 and 2 extending in the longitudinal direction of the vehicle, a rectangular frame-shaped radiator support 3 attached to the front end of the left and right side members 2, and the left and right sides. And a front bumper 4 disposed in front of the vehicle.

  An engine unit 5 is mounted between the left and right side members 2, and the engine unit 5 is arranged so as to be displaced to the right in the vehicle width direction with respect to the vehicle center line. A hood (not shown) for opening and closing the engine room E is disposed above the left and right side members 2.

  An air conditioning capacitor 7 is disposed behind the front bumper 4 in the vehicle. A radiator 8 is disposed in the vicinity of the rear side of the air conditioning capacitor 7 so as to overlap in the vehicle front-rear direction.

  In the vicinity of the air conditioning capacitor 7 between the front bumper 4 and the air conditioning capacitor 7, a cross member (vehicle body member) 10 extending in the vehicle width direction is disposed.

  The air-conditioning condenser 7 and the radiator 8 are attached to the radiator support 3 and are arranged to be deviated to the left in the vehicle width direction with respect to the vehicle center line between the left and right side members 2.

  The front bumper 4 includes a bumper main body 4a extending in the vehicle width direction, and left and right side portions 4b and 4b extending rearward and bent to the left and right edges of the bumper main body 4a.

  An air inlet 4c that supplies cooling air (see arrow a in FIG. 1) to the air conditioning condenser 7, the radiator 8, and the engine unit 5 is formed in the lower part of the bumper body 4a. A bumper grill 12 is attached to the air inlet 4c.

  The cross member 10 functions as an energy absorbing member at the time of a vehicle collision or as a bumper rein hose, and the left and right end portions 10a and 10a thereof are fixed to the front end surfaces of the left and right side members 2, respectively. .

  The cross member 10 has a generally cross-sectional hat shape having an upper edge portion 10c and a lower edge portion 10d, and a bulging portion 10e bulging forward from the both edge portions.

  The cross member 10 is formed such that the vertical dimension of the central part 10b is smaller than the vertical dimension of both end parts 10a. Further, the bulge amount (see FIG. 4) of the bulge portion 10e of the central portion 10b is formed larger than the bulge amount of the bulge portion 10e 'of both end portions 10a (see FIG. 3).

  Further, the cross member 10 is formed in an arcuate shape so that the central portion 10b is positioned forward with respect to both end portions 10a in plan view (see FIG. 1). For this reason, the gap s2 between the central portion 10b of the cross member 10 and the air conditioning capacitor 7 is larger than the gap s1 between the left end portion 10a and the air conditioning capacitor 7.

  Between the left and right edges of the air-conditioning condenser 7 and the front bumper 4, left and right heat shielding members 14 and 15 are disposed to block between the two. The left and right heat shield members 14 and 15 are formed of a resin foam material such as urethane resin which has heat resistance and flame retardancy and easily elastically deforms. The left and right heat shield members 14 and 15 may be formed of rubber.

  Left and right seal plates 17 and 18 are fixedly attached to the left and right heat shield members 14 and 15, and the left and right seat plates 17 and 18 are attached to the radiator 8.

  As shown in FIG. 3, the left heat shield member 14 is a cross between the bulging portion 10 e ′ of the cross member 10 and the air conditioning capacitor 7 in the space between the front bumper 4 and the air conditioning capacitor 7. It is formed so as to close the portion excluding the member rear space. The front surface of the left heat shield member 14 is adhered and fixed over substantially the entire length of the back surface of the front bumper 4, and the rear surface is a portion above the front surface of the cross member 10 and the space behind the cross member of the air conditioning capacitor 7. , It is fixed to the lower part.

  As shown in FIG. 4, the right heat shield member 15 is formed so as to block a portion of the space between the front bumper 4 and the air conditioning capacitor 7 except for the portion in the bulging portion 10 e of the cross member 10. Has been. The front surface of the right heat shield member 15 is adhered and fixed over substantially the entire length of the rear surface of the front bumper 4, and the rear surface is adhered and fixed to the front surface of the cross member 10 and the air conditioning capacitor 7.

  Here, the left and right heat shield members 14 and 15 are formed such that the front-rear dimension is slightly larger than the space between the front bumper 4 and the air conditioning capacitor 7 and is slightly compressed and deformed in the front-rear direction. It is attached in a state.

  A left heat shielding member 20 is disposed in a gap (heat shielding region) s1 between the bulging portion 10e 'located at the left end portion of the cross member 10 and the left edge portion of the air conditioning capacitor 7 (see FIG. 3). ). A right heat shielding member 21 is disposed in a gap (heat shielding region) s2 between the bulging portion 10e bulging portion 10e located at the center of the cross member 10 and the right edge portion of the air conditioning capacitor 7. .

  The left heat shielding member 20 includes a base portion 20a having substantially the same vertical dimension as the cross member 10, and heat shielding materials 20b and 20c attached to the front and rear surfaces of the base portion 20a, respectively. The heat shield members 20b and 20c are formed so as to close the gap s1 between the cross member 10 and the left edge of the air conditioning capacitor 7, and are elastically deformable.

  The right heat shield member 21 includes a base portion 21a having substantially the same vertical dimension as the cross member 10, and a heat shield material 21b attached to the front surface of the base portion 21a. The cross member 10 is formed so as to close the bulging portion 10e and is elastically deformable. A gap s2 between the cross member 10 and the right edge of the air conditioning capacitor 7 is closed by the heat shield 21b and the base portion 21a rear portion 15 'of the right heat shield member 15.

  First engaging portions 20d and 21d are formed at the lower ends of the base portions 20a and 21a of the left and right heat shielding members 20 and 21, respectively, and second engaging portions 20e and 21e are formed at the upper ends. .

  The first engaging portions 20d, 21d are formed in a J-shaped hook shape and can be engaged with the lower edge portion 10d of the cross member 10.

  As shown in FIG. 6, the second engagement portion 20 e of the left heat shielding member 20 is formed to be bent into a square hook shape. With the first engagement portion 20d engaged with the lower edge portion 10d, the inclined surface c of the claw portion 20f of the second engagement portion 20e is forward with respect to the upper edge portion 10c of the cross member 10. When pressed, the claw portion 20f is elastically deformed upward, and the locking surface d presses the upper edge portion 10c rearward, whereby the second engaging portion 20e is engaged with the upper edge portion 10c of the cross member 10. Match. The second engagement portion 21e of the right heat shielding member 21 has the same structure.

  The base portions 20a and 21a are made of hard resin or metal, and the first engaging portions 20d and 21d are integrally formed at the lower ends of the base portions 20a and 21a, and the second engaging portions 20e and 21e are integrally formed at the upper ends. ing. The vertical length of the left base portion 20 a is set to a length corresponding to the vertical length of the left end portion 10 a of the cross member 10, and the vertical length of the right base portion 21 a is the vertical length of the central portion 10 b of the cross member 10. The length corresponding to the length is set. The cross member 10 is formed with a convex portion (not shown) for preventing lateral displacement of the base portions 20a and 21a by contacting the base portions 20a and 21a.

  The heat shields 20b, 20c, and 21b are formed of a resin foam material that has heat resistance and flame retardancy, and is easily elastically deformed, like the left and right heat shield members 14 and 15. In addition, you may form each heat shield 20b, 20c, 21b with rubber | gum.

  The heat shield 20b on the front side of the left heat shield member 20 is adhered and fixed to the front surface of the base portion 20a, and is formed so as to follow the cross-sectional shape of the bulging portion 10e 'of the cross member 10. The rear heat shield member 20c is adhered and fixed to the rear surface of the base portion 20a, and is formed so as to close the gap between the base portion 20a and the air conditioning capacitor 7.

  The heat shielding material 21b of the right heat shielding member 21 is bonded and fixed to the front surface of the base portion 21a, and is formed so as to follow the cross-sectional shape of the bulging portion 10e of the cross member 10. Since the gap s2 between the base portion 21a and the air conditioning condenser 7 is wider than the gap s1, the right heat shield member 15 can be easily assembled in the gap s2.

  To assemble the left heat shielding member 20 of this embodiment, hold the base portion 20a and insert it between the cross member 10 and the air conditioning capacitor 7 from above, and cross the first engaging portion 20d of the base portion 20a. By hooking on the lower edge portion 10d of the member 10 and pressing the second engagement portion 20e forward against the upper edge portion 10c, the second engagement 20e is elastically deformed to engage with the upper edge portion 10c ( (See FIG. 6). Simultaneously with this assembly, the front heat shield 20b enters the bulging portion 10e 'of the cross member 10, and the rear heat shield 20c contacts the air conditioning capacitor 7 to close the gap s1. The right heat shielding member 21 is also assembled in the same procedure as described above. Thereafter, the left and right heat shield members 14 and 15 are assembled. Here, you may assemble | attach in the state which turned the 1st engaging part and the 2nd engaging part upside down.

  As a result, air that has risen in temperature by passing through the air conditioning condenser 7 and the radiator 8 and air that has risen in temperature by passing through the engine unit 5 are prevented from flowing into the air conditioning condenser 7 by wrapping forward. (See arrow b in FIG. 1).

  According to the present embodiment, the left and right heat shielding members 20 and 21 can be elastically deformed so as to block the gaps s1 and s2 and the base portions 20a and 21a extending in the vertical direction in the heat shielding region composed of the gaps s1 and s2. Since the heat shields 20b, 20c and 21b are provided, the gaps s1 and s2 between the cross member 10 and the air conditioning capacitor 7 can be reliably closed by the heat shields 20b, 20c and 21b, and the temperature rises. Thus, it is possible to prevent the air from flowing into the air conditioning condenser 7 and the radiator 8 and to improve the cooling performance when the vehicle is stopped or when traveling at a low speed.

  In the present embodiment, hook-shaped first engaging portions 20d and 21d that engage with the lower edge portion 10d of the cross member 10 and the first engaging portions 20d and 21d are engaged with the base portions 20a and 21a. Since the second engaging portions 20e and 21e to be engaged with the upper edge portion 10c are formed in this state, the left and right heat shielding members 20 and 21 can be easily assembled to the cross member 10, and the conventional bonding Compared with the case of attaching with a tape or the like, the workability at the time of assembly can be improved, and variations can be prevented. As a result, if the gap between the base portions 20a and 21a can be inserted, it can be reliably and easily assembled even in a narrow gap that has been difficult with a conventional foam material.

  In the above embodiment, the left and right heat shielding members 14 and 15 and the left and right heat shielding members 20 and 21 are made of the same material. The heat shield may be made of a material having higher heat resistance and flame resistance than the left heat shield. By doing in this way, the thermal damage by the high temperature air of an engine side can be prevented, suppressing cost. In other words, the temperature of the air that has passed through the radiator 8 easily rises as it passes through the engine unit, but it is effective because the heat resistance of the heat shield located on the engine side is increased.

4 Front bumper 7 Air conditioning condenser 8 Radiator 10 Cross member (body member)
10c Upper edge portion 10d Lower edge portions 20, 21 Heat shield members 20a, 21a Base portions 20b, 20c, 21b Heat shield materials 20d, 21d First engagement portions 20e, 21e Second engagement portions s1, s2 Clearance

Claims (1)

An air conditioning capacitor is disposed behind the front bumper vehicle, and a radiator is disposed behind the air conditioning capacitor.
A vehicle body member extending in the vehicle width direction is disposed in the vicinity of the air conditioning capacitor between the front bumper and the air conditioning capacitor,
A heat shielding structure for an automobile that prevents inflow of air whose temperature has risen from a gap between the vehicle body member and the air conditioning capacitor,
A heat shielding member is disposed in a gap between the vehicle body member and the air conditioning capacitor;
The heat shielding member includes a strip-like base portion extending in the vertical direction in the heat shielding region of the gap, and an elastically deformable heat shielding material formed so as to close the gap,
A hook-shaped first engaging portion that engages with either the upper edge portion or the lower edge portion of the vehicle body member on the base portion, and the other engagement with the first engaging portion engaged. A heat shielding structure for an automobile, wherein a claw-shaped second engaging portion is formed.

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